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Find inside a hash MongoDB?
To find inside a hash MongoDB, you can use dot(.) notation. Let us first create a collection with documents
> db.hashDemo.insertOne({"ClientName":"Larry","ClientAge":23,"ClientDetails":{
"isEducated": true, "ClientProject" : "University Management"}});
{
"acknowledged" : true,
"insertedId" : ObjectId("5ca1ef1266324ffac2a7dc5e")
}
> db.hashDemo.insertOne({"ClientName":"Chris","ClientAge":26,"ClientDetails":{
"isEducated":false, "ClientProject" : "Online Book Store"}});
{
"acknowledged" : true,
"insertedId" : ObjectId("5ca1ef7766324ffac2a7dc5f")
}Following is the query to display all documents from a collection with the help of find() method
> db.hashDemo.find().pretty();
This will produce the following output
{
"_id" : ObjectId("5ca1ef1266324ffac2a7dc5e"),
"ClientName" : "Larry",
"ClientAge" : 23,
"ClientDetails" : {
"isEducated" : true,
"ClientProject" : "University Management"
}
}
{
"_id" : ObjectId("5ca1ef7766324ffac2a7dc5f"),
"ClientName" : "Chris",
"ClientAge" : 26,
"ClientDetails" : {
"isEducated" : false,
"ClientProject" : "Online Book Store"
}
}Following is the query to find inside a hash MongoDB
> db.hashDemo.find({"ClientDetails.isEducated" : false, "ClientDetails.ClientProject" : "Online
Book Store"}).pretty();This will produce the following output
{
"_id" : ObjectId("5ca1ef7766324ffac2a7dc5f"),
"ClientName" : "Chris",
"ClientAge" : 26,
"ClientDetails" : {
"isEducated" : false,
"ClientProject" : "Online Book Store"
}
}
Updated on: 30-Jul-2019
197 Views
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